CVE-2026-6780
High
Description
Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
SeverityHigh
CVSS7.5
Exploit probability22. percentile0.3%
Product
Mozilla Firefox
PublishedApr 21, 2026
First seenApr 21, 2026
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Update
- mozilla firefox150.0 or later
- mozilla thunderbird150.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 150.0 | 150.0 |
| mozilla thunderbird | v < 150.0 | 150.0 |
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